Device for the hydraulic transmission of power



Sept. 24, 1935. JfM. BEAUMONT I 2,015,212 I DEVICE FOR THE HYDRAULICTRANSMISSION OF POWER Filed Dec. 23, 1932 55 ul p the casing e.

. Patented Sept, 193

UNITED STATES PATENT, OFFICE DEM FOR THE HYDRAULIQ TRANSMIS- SION orrowan 7 John Murray Beaumont, Huddersfield,-Eng land ApplicationDecember 23,1932, Serial No. 648,677

i Great Britain Dccemberi23, 1931' 1 Claim. (01. 60-54) 3' "rueinvention "relates to hydraulic clutches'.'

or devicesfor the hydraulic transmission of power of the type in which abladed member fast 'on a driving shaft rotates within a casing 'conw 5taining liquid which, by centrifugal action, causes bladed member fast.on a

rotation of another shaftto'bedriven 'In'order thata braking action maybe exerted on thedriven shaft, or the direction of rotation 10, of saidshaft lie-reversed, it has been proposed-to place. between the drivingand driven bladedmemberaa' third bladed-member which can be permitted torotate freely, or the rotation of which can beretarded orcompletelystopped and l thus effect a slowing down, stoppage or-reversalof the direction of rotation of the driven member. It is to apparatuscomprising three bladed members as just described that my invention re-.

lates, ,and it has for its object to improve upon.

20 the construction previously propoud. p 7 According to the invention,thevthird, or. centrally disposed bladed member 'has its peripheryformedas, or provided with an annular ringor drum which is encircled by abrake band orhas associated with it v 25 some other braking meanswhereby its rotation can be retarded or completely arrested. Theperipheral ring portion of the central bladed member has secured to it.the digvided halves of a casingwhich-enclosesthe 'driving and drivenbladed members, the said portions being supported in suitable bearingsconcentric with the driving and driven shafts and- 7 being providedrespectively with: stumng boxes through which the driving and drivenshafts pass.

' 35 The accompanying drawing illustrates at Fig.

1, :in sectional elevation and more 'or. less diagrammatically, ahydraulic clutch according to my invention;

- Fig. 2being a detail elevation ofportions of 40 the .three'bladedmembers,'wh ich will facilitate the understanding of theoperation of the intermediate member and its effect upon the driven:

member.

Referring to'the drawing :1 represents a 45 in: shaft carrying aninternally bladed member members b and a, is formed internally with aladed portion! which isintermediate 0 of themembersb and d. a

- Thrust. bearings b and 'd' are provided for the '-members b and d andstuffing boxes a and'c' prevent leakage around the'drivingand drivenshafts. Suitable bearings e' and e'are provided to curved if preferred.

' versed.

- 11, and c adriven shaft carrying an'internally bladed member d. Acasing e, enclosing the.

Thecasing e isformed or providedwith an-annular ring e .which isapted tobe engaged by a brakeband a. l

The bladescf the driving member b and inter.-

mediatemember f are arranged at suitableangles 5 "as shown, whilst thoseof the driven member d may be disposed angularly asshown; or-may beparallel with the axis of the said member. The blades of any or all thethree members may be 10 Liquid thrown out centrifugal from the centralpart ofthe casing into the spaces between the blades of the drivingmember b, is caused by the angular disposition or curvature of the saidblades to travel laterally into'the spaces between the blades of thefreely rotatable intermediate member I and so to act upon such bladesthat the intermediate member is driven.. 'In similar manner the liquidis caused to travel laterally from the intermediate member to the drivenmember at and so to act upon the blades of the latter as to transmitmotion tov it. the load on the driven member to be within the capacityof I the driver, the three members will, by centrifugal 'actionabecaused to rotate uniformly.

If, however, by means of the brake device the rotation of theintermediate member f isretarded,

. the action of the liquid emerging therefromupon the blades of thedriven member d'will be such to be rotating in the direc on of the arrowA,

all three members will, so long as the inter- 3 mediate member is leftfree, rotate in the same direction. If motion of the intermediate mem-.ber is retarded the streams of liquid emerging from between its bladescommence to slowdown rotation of themember d and if movement of themember I isretarded beyond a certain pointer is completely-stopped, themember d is first stopped and thenthe direction of its rotationreversed.

The device thus. provides a brake and a reverse drive for a driven shaftboth controlled by a single member, and it functions as anautomatic orself-acting gear changer for-the reason that if the load imposed Ion thedriven shaft increases beyond the capacity of the driver, the drivenmember "-s1ips?'- with relation to the interm'ediate member. Thedevicehas also the important advantage that it is noiseless in action, sinceit embodies no meshing gear wheels.

The term bladed member is intended to include a disc or block havinginclined and/or curved passages formed through it.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

A hydraulic clutch of the class described comprising a two part housingsupported in aligned bearings-a peripheral internally bladed ringdisposed between and secured to the two parts of the housing, a bladeddriving member disposed in one part of the housing at one side of saidbladed ring and immediately adjacent the same, a drive shaft supportingsaid bladed drive memher, said housing providing an end thrust bearingand a stumng box for said drive shait, both said bearing and said stumngbox being disposed concentrically with said housing supporting bearing,a bladed driven member in the other part of the housing at the oppositeside of said bladed ring and immediately adjacent the same, a driveshaft carried by said second part of the housing and supporting saiddriven member, a thrust 3 bearing and stui'iing box for said drivenshaft similar to said first described thrust bearing and stumng box, abrake element positioned to engage the periphery of said internallybladed ring 10 to vary the speed of rotation oi! the same, and theblades of said ring being rearwardly inclined in the direction oi thebladed driven member whereby the speed imparted to the driven memher isvaried when the speed of rotation of said 15 ring is varied by saidbrake and whereby the driven member will be reversed when the bladedring is stopped by said brake John M. BEAUMONT. m

